
ISO general purpose screw threads - Basic profile Part 1: Metric screw threads (ISO 68-1:1998)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
ISO general purpose screw threads - Basic profile Part 1: Metric screw threads (ISO 68-1:1998)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频